經濟部智慧財產局員工消費合作杜印製 _^10245 37__ 五、發明說明（/ ) 〔發明之技術領域〕 本發明係關於轉轍器用底板之緊固構造。 〔習知技術及發明所欲解決之課題〕 一般之轉轍器，如圖8所示，所採用的構造+，係將鋼 製底板22固定於軌枕21上，又於底板22上除固定有基本 軌條23外，將鄰接於基本軌條而設之轉轍器尖軌24在底 板22上藉由轉轍器（未圖示）左右滑動。然而，鐵路軌道 之轉轍器內的軌條緊固裝置，係採用各種形式之軌條緊固 構造的組合，但大約可分爲下列兩種形式。其一，係闬螺 栓將壓板以左右位置可調節的方式固定於底板，以壓板之 一端壓緊軌條的座部以使軌條緊固於底板之所謂的壓板形 式。其二，係如圖9所示，用螺栓32將側面略呈L字狀之 軌撐31以左右位置可調節的方式固定於底板33上，使軌 撐31之前端部抵接於基本軌條34之上腹部35或顎部36， 且將軌撐31之L字狀彎曲部37抵接於軌條之座部38上面 以使軌條34緊固於底板33，成爲防止軌條34之傾斜(傾倒 )的軌撐形式。（參照日本實公昭48-12651號公報）。 做爲轉轍器內基本軌條之緊固裝置，不論採用壓板形 式或軌撐形式，爲將圖9所示之軌條34緊緊固定於底板 33上且防止不自然力量的發生，不管是任何軌枕，宜保持 使固定於底板33上（例如，用軌條固定槽39)之軌條34 與軌撐（或壓板）固定槽40的位置關係爲平行或稍斜（例 如，相對於軌條固定槽使軌撐固定槽形成1/10的傾斜）的 關係之方式，在軌枕上配置底板。 3 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） U----^---^---W---裝---- ----訂---------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 410245 A7 五、發明說明（5 ) 然而，轉[器，如圖10所示’其構成要件可大致分爲 尖部41、導部42、叉部43、護部44 ’不論取任何部分， 在各軌枕45上之軌條46的安裝位置皆逐漸變化，又，軌 條46與軌枕45大部分未直交’其交叉角度亦逐漸變化。 而軌枕之長度亦需要因應其使用處而變化。 如此，對曲率有變化之轉轍器內基本軌條’若使用木 枕爲軌枕的情形，如圖11所示，爲保持固定於底板51上 之基本軌條52與軌撐（或壓板）53之固定槽的位置關係 如上述關係，因應基本軌條52之曲率變化而逐漸變化相對 木枕54之底板51、55、56、57的設置位置時’爲了固定 此等底板於木枕54，則能使用道釘、螺旋道釘固定之。然 而，就現況而言，木枕材料的木材價格昂貴，更從木枕之 年久腐杇而須抽換和保護資源的觀點來看’亦需要尋求其 他優良之軌枕材料。 另一方面，使用預鑄混凝土(pc)枕以代替木枕的情形 ，在底板固定於PC枕之時，因不能使用道釘類，如圖 12(a)、（b)所示，一般採用將從底板緊固裝置61之下部突 出的固定器62或63裝入於PC枕64內而固定的方法。此 PC枕，若如一般軌道般使用多數之同一形狀者時’因製造 成本低廉故被應用，但如圖12(a)、（b)所示’因在PC枕內 埋設有多數之做爲補強部件之鋼棒65或高強鋼絲66 ’爲 要保持如上述之基本軌條與軌撐（或壓板）之固定槽的位 置關係，乃如圖13所示’若相對曲率變化之轉轍器內基本 軌條67的底板68 ' 69、70、71之設置位置逐漸變化的情 4 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） J----L-----------裝.-------訂· —-------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 4ΐ〇δ45 a7 -~' ---------B7 五、發明說明（> ) 开夕’由於必肩以不影響到上述鋼棒或高強鋼絲的方式將底 板緊固裝置72的^ ^ ^ J固疋器裝入PC枕73內，故同一種PC枕 曰補強部件之埋設位置爲相同者〕之使用範圍係有臟 疋。又’因各_轍器及各pc枕上的底板裝配角度、位 置相異’導=Pc枕需要多種之製造顚又其構造複雜， 故在價格上昂貴，朗觸雜辟特賊道PC枕化的 障礙。 又’如圖14所示’針對曲率變化之轉轍器、…許條 67 ’將底板68、69、70、71相對PC枕73設置在同一的位 置（寬方向之約中心處）的情形，雖然較易於避免底板緊 固裝置72之固定器與PC枕73內之鋼棒产%巧的相互 影響，但爲保持如上述之基本軌條67與軌撐〈^ 固定槽的位置關係，必須就各麵轍器及各pc枕上之底 板施以不同之加工，故非常煩雜。 本發明係針對習知技術所具有的這些問-，而其二旳 ’就是在於提供減少底板、PC枕或鋼枕之㉟類L #用 底板之緊固構造。 〔課題之解決手段〕 爲達成上述目的，本發明要旨中第一發明，係—種轉 轍器用底板之緊固構造，係採於軌枕上透過底板緊固裝置 固定底板，而於該底板上透過軌條緊固裝置緊固軌條之方 式’其特徵爲：在上述底板上具有軌條緊固裝置固定槽， 上述底板長邊方向兩端面係形成以底板中心爲圓心之圓弧 形狀，而抵接於該底板兩端之圓弧面的底板緊固裝置之面 5 L. - ,----：---裝 - ------訂 —------綠 (請先閱讀背面之注意事項再填寫本買) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 A7 ___B7___ 五、發明說明（0 ) 亦形成相同的I»弧面。 第二發明，係一種轉轍器用底板之緊固構造，其特徵 爲：係於上述第一發明中，在底板緊固裝置與底板之間， 裝設有抵接此等兩部件的電氣絕緣材，該電氣絕緣材於與 底板緊固裝置所接觸之處具有底板緊固裝置防脫落用突起 ，且抵接於底板端部之圓弧面的電氣絕緣材之面係形成與 底板端部之圓弧面相同的圓弧面，又抵接於底板緊固裝置 之圓弧面的電氣絕緣材之面係形成與底板緊固裝置之圓弧 面相同的圓弧面。 第三發明，係一種轉轍器用底板之緊固構造，係採於 軌枕上透過底板緊固裝置以固定底板，而於該底板上透過 軌條緊固裝置來連結軌條的方式，其特徵爲：在底板緊固 裝置與底板之間，裝設有抵接此等兩部件的電氣絕緣材， 藉由該電氣絕緣材之兩端部突出的部件封鎖底板之側端部 ，在上述底板上具有軌條緊固裝置固定槽，又上述電氣絕 緣材抵接於底板緊固裝置之面係形成以底板中心爲圓心之 圓弧形狀，而與該電氣絕緣材之圓弧面抵接的底板緊固裝 置之面係形成相同的圓弧面。 第四發明，係一種轉轍器用底板之緊固構造，其特徵 爲：係於上述第一、第二或第三發明之中，在底板上，除 軌條緊固裝置固定槽外，亦具有軌條固定槽。 依第一發明，相對於軌條長邊方向，爲使軌條與軌條 緊固裝置固定槽的位置關係能保持一定，乃準備複數個同 一形狀之底板，雖然底板緊固裝置在各軌枕中設置於長邊 6 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） i --^---裝------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 410245 A7 _ B7 五、發明說明（γ) 方向之位置各細相異’但相對於軌枕寬方向則設置於中心 的同一位置’將底板兩端之圓弧面沿著底板緊固裝置之圓 弧面以既定之角度轉動，將該軌條以軌條緊固裝置緊固之 而固定於底板上，且將軌條緊固裝置固定於軌條緊固裝置 固定槽，以底板緊固裝置將底板固定於軌枕上。 如此’依第一發明，雖然所有之底板緊固裝置在各軌 枕中設置於長邊方向之位置各個相異，但相對於軌枕寬方 向則設置於中心的同一位置，雖轉轍器之種類不同，因無 緊固底板之角度限制’可謀求軌枕之共通化，擴大PC枕 之適用範圍，使轉轍器之PC枕化變爲容易。又，因能使 用同一形狀之底板，故非常經濟。又，本發明並不限於PC 枕，其亦適用於鋼枕、樹脂製枕或平板，而可期待同樣效 果。 第二發明係於第一發明之中附加有抵接於底板緊固裝 置及底板之電氣絕緣材，而以設在電氣絕緣材之防脫落用 突起能確實防止底扳緊固裝置之脫落。 第三發明基本上雖能期待與第一發明同樣之作用效果 ，但附加抵接於底板緊固裝置及底板之電氣絕緣材，以從 該電氣絕緣材之兩端部突出的部件封鎖底板之側端部，就 此點而言，則與第一發明不同，故於第三發明中，使電氣 絕緣懺與底板一體化，將抵接於底板緊固裝置之電氣絕緣 材的圓弧面沿著底板緊固裝置之圓弧面以既定之角度轉動 ，而將底板定位於既定位置即可。 依第四發明，因固定軌條於軌條固定槽內，故能提高 7 "------4----------- — — 訂 ---------線 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 410245 五、發明說明（t) 軌條之固定性N。 〔發明之實施形態〕 根據圖面所示之具體例說明本發明於下：圖1係圖2 之I-Ι線剖面圖，圖2(a)係本發明轉轍器用底板之緊固構 造之一實施例的俯視圖’圖2(b)係電氣絕緣材之端面圖。 於圖1、2之中，PC枕1係取適當之間隔互相平行（紙面 直角方向）排列於鐵路路基上，在PC枕1上透過平板2’ 以底板緊固裝置3固定底板2。底板緊固裝置3所採用的 方式，係用如圖12所示般之固定器62或63將部件4固定 於PC枕1上，又該部件4設置有貫通孔，而藉由插通該貫 通孔之線彈簧壓件5的彈性力將底板2壓緊於下方，藉此 以固定底板2於PC枕1上。於本實施例之中，在底板2之 端面與底板緊固裝置3之間，裝設有抵接於此兩部件的電 氣絕緣材6。電氣絕緣材並非絕對需要，未設置電氣絕緣 材之情形亦有。 7係基本軌條，8係尖軌，基本軌條7之軌條底座7 a 位於軌條固定槽9內，基本軌條7則以軌條緊固裝置10固 定於底板2上。軌條緊固裝置1〇，係將呈倒U字狀之夾緊 卡止金屬件11用焊接固定於底板2，另在軌撐12之後部 形成貫通上下之容納孔，於能使夾緊卡止金屬件11嵌入於 該容納孔的方式配置軌撐12，在此軌撐12上，載設俯視 呈如日文平假名之「no」之「略no字形狀」的線彈簧夾 具13，在將線彈簧夾具13彈性變彤之同時使其一端部插 入於夾緊卡止金屬件11，係一種以線彈簧夾具13之彈性 8 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公愛） ^----_---------裝-------—訂*--I----.線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 410245 μ ______B7_________ 五、發明說明（7 ) 力緊固軌撐12\與基本軌條7的軌撐式無螺釘彈性緊固裝置 ，而軌撐12之腳部12a則固定於軌撐固定槽（軌條緊固裝 置固定槽）14內》 如圖2(a)所示，底板2之長邊方向兩端面2a、2b形成 爲以底板中心15爲圓中心之半徑r的圓弧形狀，而抵接於 底板2兩端之圓弧面的電氣絕緣材6之內面6a係形成與2a 或2b相同的圓弧面，又，電氣絕緣材6之外面6b亦形成 爲圓弧面，而抵接於此電氣絕緣材6外面6b之底板緊固裝 置3的構成部件4之面4a，亦形成與6b相同的圓弧面a又 ，電氣絕緣材6與部件4接觸之處具有底板緊固裝置防止 脫落用突起16〔參照圖2(b)〕。再者，亦能在電氣絕緣材 6之整個高度方向形成底板緊固裝置防止脫落用突起。若 不設置電氣絕緣材時，將抵接於底板2之兩端之圓弧面的 底板緊固裝置的構成部件4之面4a，形成與底板2之端面 相同的圖弧面。 於圖3、圖4之中，在底板2之端面與底板緊固裝置3 之間，裝設有抵接此兩部件的電氣絕緣材17，藉由從電氣 絕緣材17之兩it而部突出之部件18〔參照圖4(b)〕封鎖底板 2之側端部，電氣絕緣材17之與底板緊固裝置3之構成部 件4的面4a抵接之面17a，係形成以底板中心15爲圓心之 半徑P的圖弧形狀，而，抵接於電氣絕緣材17之圓弧面 17a的底板緊固裝置3的構成部件4之面4a亦形成有相同 的圓弧面。依本實施例，係將電氣絕緣材17與底板2視爲 一體，而將電氣絕緣材Π沿著底板緊固裝置3的構成部件 9 本紙張尺度適用中國國家標準（CNS)A4規格ilO X 297公釐) —~" —— — — — — ΙΊΙ--^ I ---I ! I ^ ii — 1 — il — (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 410245 A7 B7 五、發明說明（<p) 4之圓弧面4&~轉動既定之角度，以將底板定位於之既定位 置。 圖5係不具有固定基本軌條7的軌條底座用的軌條固 定槽之時，相關於本發明之轉轍器用底板的緊固構造之一 實施例的剖面圖。 圖6,係將有關於本發明轉轍器用底板之緊固構造在 適用於左轉轍器的情形之俯視圖，而圖7，係將有關於本 發明轉轍器用底板之緊固構造在適用於右轉轍器的情形之 俯視圖。如圖6、圖7所示.，雖然所有之底板緊固裝置3 配置於軌枕長邊方向之位置相異，但對軌枕寬方向底板緊 固裝置3之中心係配置於PC枕1之寬方向之中心的同一位 置，故可避免受到埋設在PC枕1內之鋼棒或高強鋼絲影 響使固定器之裝入位置相對於所有之PC枕在同一位置處 。亦即，可使用同一種類的PC枕。 〔發明之效果〕 由於本發明係如上述般之構成，故能提供一種轉择 用底板之緊固構造，其可減少底板、PC枕或_汉％庚用種 類。特別是依據申請專利範圍第1項、第3項之發明，雖 然所有之底板緊固裝置於各軌枕之長邊方向的位置個Μ 1 異’但對軌枕寬方向位於中心的相同位置，因此，雖轉轍 器之種類不同，因無緊固底板之角度限制，故可達成枕軌 的共通化，從而擴大PC枕的適用範圍，使轉轍器之PC枕 化則變爲容易。又，因能使用同一形狀之底板，故非常經 濟。本發明不限於PC枕，亦適用於鋼枕、樹脂製枕或平 10 1M--4!裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS>A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 410245 A7 B7 五、發明說明（Ί ) 板，而可期待饲樣效杲。 特別依攄申請專利範圍第2項之發明，以設置於電氣 絕緣材之防止脫落用突起能確實防止底板緊固裝置之脫落 〇 特別依據申請專利範圍第4項之發明，由於將軌條固 定在軌條固定槽內，故能提高軌條之固定性。 〔圖式之簡單說明〕 圖1係圖2(a)的I - I線剖面圖。 圖2(a)係本發明轉轍器用底板之緊固構造之一實施例 的俯視圖，圖2(b)係電氣絕緣材的端面圖。 圖3係圖4(a)之ΠΙ-ΙΠ線剖面圖。 圖4圖4(a)係本發明轉轍器用底板之緊固構造之另一 實施例之俯視圖，圖4(b)係電氣絕緣材之端面圖。 圖5係本發明轉轍器用底板之緊固構造之再另一實施 例之側剖面圖。 圖6係將本發明轉轍器用底板之緊固構造適用於左轉 轍器時之俯視圖。 圖7係將本發明轉轍器用底板之緊固構造適用於右轉 轍器時之俯視圖。 圖8係轉轍器之一例的剖面圖。 圖9係習知之軌撐式軌條緊固裝置之一例的前視圖。 圖10係轉轍器之槪略俯視圖。 圖11係將習知之轉轍器用底板之緊固構造適用於木枕 之一例的俯視圖。 11 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ---I---------裝---111--訂---------線 (請先閱讀背面之注意事項再填寫本頁) PC枕 底板 底板緊固裝置 電氣絕緣材 基本軌條 軌條固定槽 軌條緊固裝置 軌撐 軌撐固定槽(軌條緊固裝置固定槽) 底板緊固裝置防脫落用突起 410245 a/ _B7_ 五、發明說明（/。） 圖12(a)係將底板緊固裝置之固定器插入於PC枕內之 .一例的側剖面圖，圖12(b)係將底板緊固裝置之固定器插入 於PC枕之另一例的側剖面圖。 圖13係將習知之轉轍器用底板之緊固構造適用於PC 枕之一例的俯視圖。 圖14係將習知之轉轍器用底板之緊固構造適用於PC 枕之另一例的俯視圖。 〔符號說明〕 1 2 3 6、17 7 9 10 12 14 16 ------ ------..--裝--------訂--------線 1·*\ (請先闓讀背面之注意事項再填寫本1) 經濟部智慧財產局員工消費合作社印製 12 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Printed by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs _ ^ 10245 37__ V. Description of the Invention (/) [Technical Field of the Invention] The present invention relates to a fastening structure for a base plate for a switch. [Problems to be Solved by the Conventional Technology and Invention] As shown in FIG. 8, the general switch device adopts the structure +, which fixes the steel base plate 22 to the sleeper 21 and fixes it to the base plate 22. Outside the basic rail 23, the switch point rail 24 provided adjacent to the basic rail is slid left and right on the bottom plate 22 by a switch (not shown). However, the rail fastening device in the switch of a railway track is a combination of various types of rail fastening structures, but can be roughly divided into the following two forms. One is the so-called pressure plate type in which the screed bolt fixes the pressure plate to the bottom plate in a way that the left and right positions can be adjusted. One end of the pressure plate presses the seat of the rail to fasten the rail to the bottom plate. Secondly, as shown in FIG. 9, the side rails 31 having a slightly L-shaped side surface are fixed to the bottom plate 33 with adjustable left and right positions by using bolts 32, so that the front ends of the rails 31 abut against the basic rails. 34 on the upper abdomen 35 or the jaw 36, and the L-shaped curved portion 37 of the rail support 31 is abutted on the seat portion 38 of the rail to fasten the rail 34 to the bottom plate 33 to prevent the tilt of the rail 34 (Dumping) rail support form. (Refer to Japanese Gazette No. 48-12651). As the fastening device of the basic rails in the switch, whether it is in the form of a pressure plate or a rail, the rails 34 shown in FIG. 9 are tightly fixed to the bottom plate 33 and prevent unnatural forces from occurring. Any sleeper should keep the positional relationship between the rail 34 fixed to the bottom plate 33 (for example, the rail fixing groove 39) and the rail support (or pressure plate) fixing groove 40 parallel or slightly inclined (for example, relative to the rail The fixing groove makes the rail support fixing groove 1/10 inclination), and the bottom plate is arranged on the sleeper. 3 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) U ---- ^ --- ^ --- W --- Packing -------- Order --- ------ line (Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 410245 A7 V. Description of the invention (5) However, the [device, as shown in Figure 10 'The constituent elements can be roughly divided into the tip portion 41, the guide portion 42, the fork portion 43, and the guard portion 44' The mounting position of the rail 46 on each sleeper 45 is gradually changed regardless of any portion. Most of it is not orthogonal to the sleeper 45, and its crossing angle gradually changes. The length of the sleeper also needs to be changed according to its use. In this way, for a basic rail in a switch with a change in curvature, if a wooden sleeper is used as a sleeper, as shown in FIG. 11, in order to maintain the basic rail 52 and the rail support (or pressure plate) 53 fixed on the bottom plate 51 The positional relationship of the fixing grooves is as described above. When the position of the bottom plate 51, 55, 56, 57 of the wooden pillow 54 is gradually changed in accordance with the curvature change of the basic rail 52, the road can be used to fix the bottom plate to the wooden pillow 54. Nails, spiral road nails fixed. However, as far as the current situation is concerned, the wood of the wood pillow material is expensive, and from the viewpoint of the age of the wood pillow, which must be exchanged and protected, it is also necessary to find other good sleeper materials. On the other hand, in the case of using concrete concrete (pc) pillows instead of wooden pillows, when the bottom plate is fixed to the PC pillows, road nails cannot be used, as shown in Figs. 12 (a) and (b). A method in which a holder 62 or 63 protruding from the lower portion of the bottom plate fastening device 61 is inserted into the PC pillow 64 and fixed. This PC pillow is used when many of the same shape are used like ordinary rails, because it is cheap to manufacture, but as shown in Figs. 12 (a) and 12 (b), the majority is embedded in the PC pillow. The steel rod 65 or high-strength steel wire 66 of the reinforcing part is used to maintain the positional relationship between the basic rail and the fixed groove of the rail support (or pressure plate) as shown above, as shown in FIG. 13 'If the relative curvature changes in the switch The position of the bottom plate 68 '69, 70, 71 of the basic rail 67 is gradually changing. 4 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) J ---- L ---- ------- Installation .------- Order · ----------- line (Please read the precautions on the back before filling out this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 4ΐ〇δ45 a7-~ '--------- B7 V. Description of the invention (>) Kaixi' Because the shoulders of the bottom plate fastening device 72 will not affect the steel rods or high-strength steel wires mentioned above. ^ ^ ^ J fixture is installed in the PC pillow 73, so the same type of PC pillow has the same embedded position of the reinforcing parts] The scope of use is dirty. Also, because the assembly angles and positions of the bottom plates on the PC pillows and the PC pillows are different, the Pc pillow requires a variety of manufactures, and its structure is complicated, so it is expensive. Obstacles. Also, as shown in FIG. 14, for a switch with a change in curvature, the stub 67 ′ sets the bottom plates 68, 69, 70, and 71 at the same position (about the center in the width direction) relative to the PC pillow 73. Although it is easier to avoid the interaction between the fixture of the bottom plate fastening device 72 and the steel bar in the PC pillow 73, in order to maintain the positional relationship between the basic rail 67 and the rail brackets as described above, it is necessary to The bottom plate on each rutter and each pc pillow is processed differently, so it is very complicated. The present invention is directed to these problems of the conventional technology, and the second aspect of the present invention is to provide a fastening structure that reduces the number of types of L # bottom plates for bottom plates, PC pillows, or steel pillows. [Solutions for solving the problem] In order to achieve the above-mentioned object, the first invention in the gist of the present invention is a fastening structure of a base plate for a switch, which is adopted on a sleeper to fix the base plate through a base plate fastening device, and transmits on the base plate. The method for fastening the rail by the rail fastening device is characterized in that there is a rail fastening device fixing groove on the bottom plate, and the two end surfaces in the longitudinal direction of the bottom plate are formed into an arc shape with the center of the bottom plate as the center of the circle. The surface of the bottom plate fastening device connected to the arc surface at both ends of the bottom plate is 5 L.-, ----: --- install------- order -------- green (please first Read the notes on the back and fill in this purchase) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ___B7___ 5. The invention description (0) is also formed Same I »arc. The second invention is a fastening structure of a base plate for a switch, which is characterized in that in the above-mentioned first invention, an electrical insulating material is provided between the base plate fastening device and the base plate to abut these two parts. The electrical insulation material has a protrusion for preventing the bottom plate fastening device from falling off at the point where it contacts the bottom plate fastening device, and the surface of the electrical insulation material that abuts on the arc surface of the end of the bottom plate forms a circle with the end of the bottom plate. The surface of the electrical insulation material with the same arc surface and the arc surface of the base plate fastening device forms the same arc surface as the arc surface of the base plate fastening device. The third invention relates to a fastening structure of a bottom plate for a switch, which is adopted on a sleeper to fix the bottom plate through a bottom plate fastening device, and to connect the rails on the bottom plate through the rail fastening device, which is characterized in that: : Between the bottom plate fastening device and the bottom plate, an electrical insulation material is provided to abut these two parts, and the side ends of the bottom plate are blocked by the parts protruding from both ends of the electrical insulation material. The fixing groove of the rail fastening device, and the surface of the electrical insulation material abutting the bottom plate fastening device is formed into an arc shape with the center of the bottom plate as the center, and the bottom plate abutting the circular arc surface of the electrical insulation material is fastened. The faces of the device form the same arc surface. The fourth invention is a fastening structure of a bottom plate for a switch, which is characterized in that it is attached to the above-mentioned first, second or third invention. On the bottom plate, in addition to the fixing groove of the rail fastening device, it also has Rail fixing slot. According to the first invention, in order to maintain the positional relationship between the rail and the fixing groove of the rail fastening device relative to the long side direction of the rail, a plurality of bottom plates of the same shape are prepared, although the bottom plate fastening device is in each sleeper. Set on the long side 6 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) i-^ --- Packing -------- Order --------- Line ( Please read the notes on the back before filling out this page) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 410245 A7 _ B7 V. Description of the invention (γ) The positions in the directions are different, but they are set relative to the width direction of the sleeper At the same position in the center, turn the arc surfaces at both ends of the bottom plate along the arc surface of the bottom plate fastening device at a predetermined angle, fasten the rail to the bottom plate with the rail fastening device, and fix The rail fastening device is fixed to the rail fastening device fixing groove, and the bottom plate is fixed to the sleeper by a bottom plate fastening device. In this way, according to the first invention, although all the bottom plate fastening devices are arranged in different positions in the long side direction of each sleeper, they are located at the same position in the center with respect to the width direction of the sleeper. Although the types of the switch are different Because there is no angle limitation of the fastening bottom plate, common sleepers can be sought, the scope of application of PC pillows can be expanded, and PC pillows of switch devices can be easily made. In addition, it is very economical because a bottom plate of the same shape can be used. In addition, the present invention is not limited to a PC pillow, and it is also applicable to a steel pillow, a resin pillow, or a flat plate, and the same effect can be expected. The second invention is in addition to the first invention an electric insulation material which abuts against the bottom plate fastening device and the bottom plate, and the protrusion for preventing the fall provided on the electric insulation material can surely prevent the bottom plate fastening device from falling off. Although the third invention can basically expect the same function and effect as the first invention, an electrical insulating material abutting on the bottom plate fastening device and the bottom plate is added, and the side of the bottom plate is blocked by members protruding from both ends of the electrical insulating material. The end part is different from the first invention in this regard. Therefore, in the third invention, the electrical insulation 忏 is integrated with the bottom plate, and the arc surface of the electrical insulating material abutting the bottom plate fastening device is along the bottom plate. The arc surface of the fastening device rotates at a predetermined angle, and the bottom plate can be positioned at the predetermined position. According to the fourth invention, since the fixed rail is fixed in the rail fixing groove, it can be improved by 7 " ------ 4 ----------- — — order ------- --- line (please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 410245 V. Description of the invention (T) The stability N of the rail. [Embodiment of the Invention] The present invention will be described below according to specific examples shown in the drawings: FIG. 1 is a cross-sectional view taken along line 1-1 of FIG. 2 and FIG. 2 (a) is a view showing a fastening structure of a base plate for a switch of the present invention. Top view of an embodiment 'FIG. 2 (b) is an end view of an electrical insulating material. In Figures 1 and 2, the PC pillows 1 are arranged on the railway subgrade in parallel (at right angles to the paper surface) at appropriate intervals. The PC pillows 1 are fixed to the bottom plate 2 by the bottom plate fastening device 3 through the flat plate 2 '. The method used for the bottom plate fastening device 3 is to fix the component 4 to the PC pillow 1 with a fixer 62 or 63 as shown in FIG. 12, and the component 4 is provided with a through hole, and the through The elastic force of the hole wire spring pressing member 5 presses the bottom plate 2 downward, thereby fixing the bottom plate 2 on the PC pillow 1. In this embodiment, between the end surface of the bottom plate 2 and the bottom plate fastening device 3, an electrical insulating material 6 is provided to abut the two components. Electrical insulation materials are not absolutely necessary, and there are cases where electrical insulation materials are not provided. The 7 series basic rails, the 8 series sharp rails, and the rail base 7 a of the basic rail 7 are located in the rail fixing groove 9, and the basic rail 7 is fixed to the base plate 2 by the rail fastening device 10. The rail fastening device 10 is used to fix an inverted U-shaped clamping and locking metal piece 11 to the bottom plate 2 by welding. In addition, an accommodating hole penetrating up and down is formed at the rear of the rail support 12, so that the clamping card can be used. A stopper 12 is arranged in such a way that the stopper 11 is embedded in the receiving hole. A wire spring clamp 13 having a “slightly no shape” like “no” in Japanese plan view is mounted on the support 12. The elasticity of the wire spring clamp 13 is made while inserting one end of the wire spring clamp 13 into the clamping and locking metal piece 11, which is a kind of elasticity of the wire spring clamp 13. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) Love) ^ ----_--------- install --------- order *-I ----. Line (please read the precautions on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 410245 μ ______B7_________ V. Description of the invention (7) The rail-type screw-free elastic fastening device that fastens the rail support 12 \ and the basic rail 7 and the feet of the rail support 12 12a is fixed in the rail support fixing groove (rail fixing device fixing groove) 14 "As shown in Fig. 2 (a), the two end surfaces 2a, 2b of the long side of the bottom plate 2 are formed to The center 15 of the base plate has an arc shape with a radius r of the center of the circle, and the inner surface 6a of the electrical insulating material 6 abutting the arc surfaces at both ends of the base plate 2 forms the same arc surface as 2a or 2b. The outer surface 6b of the insulating material 6 is also formed as an arc surface, and the surface 4a of the component 4 of the base plate fastening device 3 that abuts on the outer surface 6b of the electrical insulating material 6 is also formed with the same arc surface a as 6b. The electrical insulating material 6 is in contact with the component 4 and has a bottom plate fastening device 16 for preventing falling off [see FIG. 2 (b)]. Furthermore, it is also possible to form a bottom plate fastening device over the entire height direction of the electrical insulating material 6 to prevent protrusions from falling off. If no electrical insulating material is provided, the surface 4a of the component 4 of the base plate fastening device that abuts on the arc surfaces of both ends of the base plate 2 will be the same arc surface as the end face of the base plate 2. In FIG. 3 and FIG. 4, between the end surface of the base plate 2 and the base plate fastening device 3, an electric insulating material 17 is provided to abut the two components, and the electric insulating material 17 protrudes from both it of the electric insulating material 17 The component 18 [see FIG. 4 (b)] seals off the side end portion of the bottom plate 2, and the surface 17a of the electrical insulating material 17 that abuts the surface 4a of the component 4 of the bottom plate fastening device 3 is formed with the bottom plate center 15 as The arc shape of the circle center radius P is the same as that of the surface 4a of the component 4 of the base plate fastening device 3 that abuts the arc surface 17a of the electrical insulating material 17. According to this embodiment, the electrical insulating material 17 and the base plate 2 are considered as a whole, and the electrical insulating material Π is along the component parts of the base plate fastening device 3. The paper size applies to the Chinese National Standard (CNS) A4 standard ilO X 297 (Mm) — ~ " —— — — — — ΙΊΙ-^ I --- I! I ^ ii — 1 — il — (Please read the notes on the back before filling out this page) Employees, Intellectual Property Office, Ministry of Economic Affairs Printed by the Consumer Cooperative 410245 A7 B7 V. Description of the invention (< p) 4 of the arc surface 4 & ~ Rotate a predetermined angle to position the bottom plate at its predetermined position. Fig. 5 is a cross-sectional view showing one embodiment of a fastening structure of a base plate for a switch of the present invention when the rail fixing grooves for a rail base for fixing the base rail 7 are not provided. FIG. 6 is a plan view showing a fastening structure of a base plate for a switch of the present invention when it is applied to a left switch, and FIG. 7 is a view showing a fastening structure of a base plate for a switch of the present invention when it is applied to Top view of the situation of a right switch. As shown in Figures 6 and 7, although all the bottom plate fastening devices 3 are arranged at different positions in the longitudinal direction of the sleeper, the center of the bottom plate fastening device 3 in the sleeper width direction is arranged in the width direction of the PC sleeper 1 The center position is the same, so it can avoid being affected by the steel rod or high-strength steel wire embedded in the PC pillow 1 so that the mounting position of the holder is at the same position with respect to all the PC pillows. That is, the same kind of PC pillow can be used. [Effects of the Invention] Since the present invention is structured as described above, it is possible to provide a fastening structure for a bottom plate for switching, which can reduce the number of types of the bottom plate, a PC pillow, or a lining. In particular, according to the inventions in items 1 and 3 of the scope of patent application, although all the bottom plate fastening devices are different in the position of M 1 in the long side direction of each sleeper, they are at the same position in the center of the sleeper width direction. Although the types of switch devices are different, because there is no restriction on the angle of the fastening base plate, the common sleeper rails can be achieved, thereby expanding the scope of application of PC pillows, and making the PC pillows of switch devices easier. In addition, it is economical because it can use the same shape of the bottom plate. The present invention is not limited to PC pillows, but also applies to steel pillows, resin pillows or flat 10 1M--4! Outfit -------- Order --------- (please read the back first Note: Please fill in this page again.) This paper size applies the Chinese national standard (CNS > A4 size (210 X 297 mm). It is printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy. 410245 A7 B7. I look forward to the effect of the feed sample. In particular, according to the invention in the scope of the patent application, the protrusions for preventing the fall provided on the electrical insulation material can reliably prevent the bottom plate fastening device from falling off. In particular, based on the invention in the scope of the patent application, Since the rail is fixed in the rail fixing groove, the fixation of the rail can be improved. [Simplified description of the drawing] Fig. 1 is a sectional view taken along the line I-I of Fig. 2 (a). Fig. 2 (a) A top view of an embodiment of a fastening structure of a base plate for a switch according to the present invention, FIG. 2 (b) is an end view of an electrical insulating material. FIG. 3 is a cross-sectional view taken along the line II-II of FIG. 4 (a). (a) is a plan view of another embodiment of the fastening structure of the base plate for a switch of the present invention, and FIG. 4 (b) is an end view of an electrical insulating material. 5 is a side sectional view of still another embodiment of the fastening structure of the base plate for a switch of the present invention. FIG. 6 is a plan view when the fastening structure of the base plate for a switch of the present invention is applied to a left switch. Top view when the fastening structure of the bottom plate for a switch of the present invention is applied to a right switch. Fig. 8 is a sectional view of an example of a switch. Fig. 9 is a front view of an example of a conventional rail-supporting rail fastening device. View. Figure 10 is a schematic top view of a switch. Figure 11 is a top view of an example of applying a conventional fastening structure of a base plate for a switch to a wooden pillow. 11 This paper is in accordance with China National Standard (CNS) A4 (210 X 297 mm) --- I --------- install --- 111--order --------- line (please read the precautions on the back before filling this page) PC Pillow-bottom-bottom-bottom-fastening device Electrical insulation material Basic rails Rail-fixing grooves Rail-fastening device Rail-supporting rail-fixing grooves (Rail-fastening device-fixing grooves) Bottom-fastening device Anti-fall protrusion 410245 a / _B7_ DESCRIPTION OF THE INVENTION (/) Figure 12 (a) is a side cross-section of an example in which the holder of the bottom plate fastening device is inserted into the PC pillow. Fig. 12 (b) is a side cross-sectional view of another example of inserting the fixing device of the bottom plate fastening device into the PC pillow. Fig. 13 is a plan view showing an example of applying the conventional fastening structure of the bottom plate for a switch to a PC pillow. Fig. 14 is a plan view of another example in which the fastening structure of the conventional switchboard base plate is applied to a PC pillow. [Symbol] 1 2 3 6, 17, 7 9 10 12 14 16 ------ ---- --..-- Equipment -------- Order -------- line 1 ** (Please read the notes on the back before filling in this 1) Employees of Intellectual Property Bureau of the Ministry of Economic Affairs Cooperative prints 12 This paper is sized for China National Standard (CNS) A4 (210 X 297 mm)